Robert A. Heinlein Sayings and Quotes

Below you will find our collection of inspirational, wise, and humorous old Robert A. Heinlein quotes, Robert A. Heinlein sayings, and Robert A. Heinlein proverbs, collected over the years from a variety of sources.'

Everything is theoretically impossible until it is done. Robert A. Heinlein
If time travel ever became widespread, English grammar was going to have to add a whole new set of tenses to describe reflexive situations -- conjugations that would make the French literary tenses and the Latin historical tenses look simple. Robert A. Heinlein
Never pick up a stray kitten... unless you've already made up your mind to be owned by it. Robert A. Heinlein
There ought not to be anything in the whole universe that man can't poke his nose into—that's the way we're built and I assume that there's some reason for it. Robert A. Heinlein
One could write a history of science in reverse by assembling the solemn pronouncements of highest authority about what could not be done and could never happen. Robert A. Heinlein
Anyone who cannot cope with mathematics is not fully human. At best, he is a tolerable subhuman who has learned to wear his shoes, bathe, and not make messes in the house. Robert A. Heinlein
It is said that God notes each sparrow that falls. And so He does...because the sparrow is God. And when a cat stalks a sparrow, both of them are God, carrying out God's thoughts. Robert A. Heinlein
"Love is that condition in which the happiness of another person is essential to your own." Robert A. Heinlein
Government! Three-fourths parasitic and the other fourth Stupid fumbling. Robert A. Heinlein